Tenzai

Terra Security, founded in 2024 in Tel Aviv and New York, uses AI to detect and block zero-day attacks, ransomware, and other advanced threats.

Series A · $38M · 2025-09

A Security, founded in 2026 in New York, USA, offers an autonomous offensive security and automated remediation platform for enterprise security teams, continuously attacking client systems to identify and fix exploitable attack paths.

$37M · 2026-06

Horizon3.ai, founded in 2019 in San Francisco, USA, develops NodeZero, an AI-powered automated red team platform that simulates real-world penetration testing.

Series D+ · $429M · 2026-08 · Valuation $2.0B

Escape, founded in 2021 in Paris, France, uses AI agents to simulate attacker behavior, continuously discovering, testing, and remediating security vulnerabilities in live applications. The company reports that its platform has served over 2,000 teams.

Series A · $36M · 2026-03

London-based CodeWall builds autonomous AI attack agents that continuously pentest enterprises from the outside, chaining weaknesses into real attack paths and validating exploitable findings, turning offensive security into a continuous capability.

Pre-Seed · 2026-10

Hadrian, founded in 2021 in Amsterdam (with an office in London) by ethical hackers, builds an offensive security platform: Atlas continuously maps the external attack surface and Nova runs on-demand agentic penetration tests, using AI agents to discover and validate exploitable vulnerabilities. Customers include McKesson, NBCUniversal, TotalEnergies and Damen Shipyards.

Undisclosed · $65M · 2026-10

Security & compliance

Series C · $270M · 2026-05 · Valuation $1.0B

Novee, founded in 2025 in Israel, conducts continuous penetration testing using AI agents that simulate offensive tactics.

Seed · $300M · 2026-01